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From: David Yang <mmyangfl@gmail.com>
To: netdev@vger.kernel.org
Cc: David Yang <mmyangfl@gmail.com>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
	Andrew Lunn <andrew+netdev@lunn.ch>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@kernel.org>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Stanislav Fomichev <sdf@fomichev.me>,
	Nicolai Buchwitz <nb@tipi-net.de>,
	Jacob Keller <jacob.e.keller@intel.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH net 05/10] net: mv643xx: move setting of netops to fix crash
Date: Thu,  8 Oct 2026 10:26:47 +0800	[thread overview]
Message-ID: <20261008022656.3592191-6-mmyangfl@gmail.com> (raw)
In-Reply-To: <20261008022656.3592191-1-mmyangfl@gmail.com>

mv643xx_eth_probe() connects the PHY before dev->netdev_ops is
assigned. phy_attach_direct() -> phy_link_topo_add_phy() reads
dev->netdev_ops through netdev_need_ops_lock() since the commit in
question, so probing crashes with a NULL pointer dereference when
CONFIG_NET_SHAPER is enabled.

Assign netdev_ops before the PHY attach, as was done for emac in commit
7c9f391ec89c ("net: emac: move setting of netops to fix crash").

Fixes: ded86da4bbb7 ("net: ethtool: relax ethnl_req_get_phydev() locking assertion")
Signed-off-by: David Yang <mmyangfl@gmail.com>
---
 drivers/net/ethernet/marvell/mv643xx_eth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 9caa1e47c174..38b4d65f58a5 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -3171,6 +3171,8 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
 	netif_set_real_num_tx_queues(dev, mp->txq_count);
 	netif_set_real_num_rx_queues(dev, mp->rxq_count);
 
+	dev->netdev_ops = &mv643xx_eth_netdev_ops;
+
 	err = 0;
 	if (pd->phy_node) {
 		phydev = of_phy_connect(mp->dev, pd->phy_node,
@@ -3221,8 +3223,6 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
 	}
 	dev->irq = irq;
 
-	dev->netdev_ops = &mv643xx_eth_netdev_ops;
-
 	dev->watchdog_timeo = 2 * HZ;
 	dev->base_addr = 0;
 
-- 
2.53.0


  parent reply	other threads:[~2026-10-08  2:29 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-10-08  2:26 [PATCH net 00/10] net: Move " David Yang
2026-10-08  2:26 ` [PATCH net 01/10] net: hisilicon: hisi_femac: " David Yang
2026-10-08 11:51   ` Jijie Shao
2026-10-08  2:26 ` [PATCH net 02/10] net: hisilicon: hip04_eth: " David Yang
2026-10-08  8:30   ` Maxime Chevallier
2026-10-08  2:26 ` [PATCH net 03/10] net: ethernet: actions: " David Yang
2026-10-08  2:26 ` [PATCH net 04/10] net: ethernet: adi: " David Yang
2026-10-08  2:26 ` David Yang [this message]
2026-10-08  2:26 ` [PATCH net 06/10] net: au1000: move " David Yang
2026-10-08  8:31   ` Maxime Chevallier
2026-10-08  2:26 ` [PATCH net 07/10] net: ethoc: " David Yang
2026-10-08  2:26 ` [PATCH net 08/10] net: ethernet: aeroflex: " David Yang
2026-10-08  2:26 ` [PATCH net 09/10] net: ti: icssm-prueth: Move " David Yang
2026-10-08  2:26 ` [PATCH net 10/10] microchip: lan865x: move " David Yang
2026-10-08  8:32   ` Maxime Chevallier
2026-10-08 12:10 ` [PATCH net 00/10] net: Move " Jijie Shao

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